A new combined system of series active and shunt passive filters aiming at harmonic compensation for large capacity thyristor converters

A novel combined system of a series active and shunt passive filter is proposed. This system, in which the required rating of the series active filter is only 0.4% as compared with the capacity of a harmonic-producing load, can suppress harmonics in power systems. Compensation characteristics are investigated in detail, and it is clarified theoretically that the compensation characteristics are equivalent to those of the already proposed combined system. Excellent practicability and validity in connection with compensating for harmonics produced by large-capacity thyristor power converters are verified experimentally.<<ETX>>

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